Loose-leaf binder.



PATENTED MAY 12, 1908.

A. E. GHATTERSON.

LOOSE LEAF BINDER.

APPLICATION FILED JULY 31, 1907.

I/I/I E/VTOR.

W/TNE56E6.

UNITED STATES PATENT OFFICE.

ALBERT EDW Y UHATTERSON, OF TORONTO, ONTARIO, CANADA.

LOOSE-LEAF BINDER.

To all whom. it may concern:

Be it known that I, ALBERT EDWY CHAT- TERSON, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Loose-Leaf Binders, of which the following is the specification.

My invention relates to improvements in loose leaf binders, in which stationary posts are used and extend through erforations in the sheets, and the object of t 1e invention is to devise a cheap, durable, effective and positive form ofbinder, which will bind and look when bound any redetermined quantity of leaves and will al 0w of leaves bei 0 added eriodically without any liability of t e looking device springing back'or rebounding, and thus insure leaves being firmly and securely bound no matter in what quantity they may be within certain limits.

A further object is to make the binder of such a nature that the posts will not be-deleteriously effected by the locking grip and yet the grip perfectly secure.

A still further object is to insure that the lock device grips both posts regardless of the thickness of the sheets contained in the binder.

T 0 effect these objects I have constructed the post plate in the usual manner and the locking device used in connection therewith of a top and bottom plate, both U-shape in cross section and one inverted to fit over the other, end plates held between the top and bottom lates by connecting bolts, the upper late being shorter than the lower plate, lockmg plateseach provided with a hole through which a post extends, the plates resting on the longer end plate and being s ring-held, and the inner ends of the plates eing beveled from below, actuating plates having the co-acting ends beveled from above and abutting the beveled ends of the locking plates and a key inserted through the key slot in the upper plate and having a double ward, w ereby both actuating plates are simultaneously o erated to throw the locking plates against tie post, the parts being arranged and constructed in detail as hereinafter more particularly explained.

Figure 1 ,is a perspective view of my binder partially in section and showing the leaves in perspective section alsoto exhibit the parts involved in my invention. Fig. 2, is a side elevation showing the locking device in longitudinal section. Fig. 3, is an enlarged Specification of Letters Patent.

Application filed July 31, 1907.

Patented May 12, 1908.

Serial No. 386,387.

-My locking device consists of the up er and lower plates B and B which are U- ape in cross section. The upper plate is inverted and straddles the lower plate, one being of greater width than the latter.

C and D are the end plates fitting between the plates B. The lower end plate projects inwardly farther than the upper end plate and the plates B B O and D are all secured together by the bolts E.

G are looking plates having holes G of a slightly greater diameter than the posts A. The outer ends of the locking plates normally rest upon the inner ends of the plates D and abut the plate C. The inner ends of the plates G are beveled.

2 are springs through which the bolts E also extend, the ends of the springs being curved and resting upon the plate G and designed to hold such plate in binding position. The upper plate B is preferably provided with open recesses B and a slot B between them.

H H are two plates located one on each side of the key slot and being preferably bent up for the sake of lightness of metal in the form shown, the inner end being vertical and the outer end being beveled at H.

I is the key, which is rovided with a double ward. The form 0 the wards may be any desired form, so that the key may be manipulated.

J is a sto formed up out of the bottom plate D an designed to obviate the plates H abutting each other and thus prevent the insertion of the key.

fi J is the bottom hole for the key stem to t in.

The locking device is securely held in position by the springs 2 pressing downwardly upon the plates G and oanting them to the inclined position shown in Fig, 3, thus causing the upper edge atthe inside and the lower edge at the outside of the hole G to grip on the post A and I find in practice securely hold the locking device in position and the sheets 3 close together.

the locking-device being removed a key I is inserted, which is turned into the position shown in Figs. land 2, so thatthe wards extend rearwardly of the locking device and, thereby force the beveled ends of the plates H underneath the beveled ends of the plates G, thus raising the latter plates to the horizontal and thereby allowing the holes G to be free on the posts A and thus allow of the locking device being moved freely up and down on the posts or taken off the posts as desired. r v

Such a binder as I describe with the locking device aforesaid insures of thesheets being securely clamped together and this too ,which the posts freely extend, springs held above the end plates and adapted to, press on to the top of the locking plates and means for raising the locking plates to the horizonfree y therethrough as and for the purpose specified.

2. The combination with the bottom plate and posts, of a locking device comprising two plates U-shape in 'cross section and fitting one over the other, end plates held therein, the lowermost projecting inwardly beyond the others, locking plates having holes through which the posts extend and beveled inner edges, springs held above the end plates and adapted to press on to the top of the locking plates, plates having reversely formed beveled ends to the locking plates and adapted to abut, the beveled edges of the locking plates and means for throwing the plates out-.

wardly simultaneously as and for the purpose specified. v a

3. The combination with the bottom plate and posts, of a locking device comprising two plates U-shape in cross section and. fitting one over the other, end plates held therein, the

lowermost projecting inwardly beyond the others, locking plates having holes through which the posts extend and beveled inner edges, springs held above the end plates and adapted to press onto the top of the locking plates, plates having reversely formed beveled ends to those on the locking plates and adapted to abut the beveled edges'of the locking plates, and a key with a double ward J extending through the slot in the top of the locking device as and for the purpose-specified. tal osition, so as to allow of the posts to pass ALBERT. EDWY CHATTERSON. Witnesses:

B. Born,

AFM. CRIGHTON, 

